Cook rotini as directed.,Drain and set aside.,Melt butter in a wok or 5-quart pot.,Add onions, garlic and mushrooms; saute until browned.,Add broccoli flowerets and cook for 5 to 7 minutes.,Pour in the rotini and stir well.,______,Add the half and half and simmer until it thickens, stirring occasionally.,Serves 4 to 6 people.